clutch1
04-09-2010, 10:05 PM
I didn't believe it myself, but for my automotive class today I decided I'd do a thorough injector clean on my Buick, since I'm sure it's never been done and I don't plan on selling it any time soon.
This included an in-tank chemical, super concentrated rail-cleaner, and intake de-carbon (like seafoam I imagine).
You start by disabling the fuel pump, because the cleaner is also a fuel... the car runs on it for around 10 minutes! Cool!! Then you fill a pressure cell with the cleaner, and hook it into the test port on the rail (Schroeder valve). You set pressure to 5-10psi below fuel pressure (I set to 30psi), Then you unplug the vacuum regulator, open the valve and start the car!
While it runs the only thing it's running on is the cleaner, which is pretty brutal, cleaning the rail, injectors, and even piston rings as it's burned through. While that's going on you run the intake cleaner through the intake (pcv hole works), and it attacks the carbon buildups and it circulates.
Finally the car dies when the cleaner's gone, you pour the in-tank cleaner into the tank, and remove the throttle body for final decarboning.... and OMG did mine need it, suuuuuper thick layer on the back of the throttle plate.. no wonder it stuck really bad. Great fix for a throttle that pops.
Then I re enabled the fuel pump and tested it out... my fuel trims went waaaaay down, don't remember the numbers, but that means lots of fuel was taken away that wasn't needed anymore now that the injectors were cleaner. And on my drive home, and 60mph cruise I was at 37mpg, up from around 30mpg at 60 mph previously.
Def a good service to do, I'm sold, and I didn't believe it. Just thought I'd share with you guys if y'all are considering it!!
This included an in-tank chemical, super concentrated rail-cleaner, and intake de-carbon (like seafoam I imagine).
You start by disabling the fuel pump, because the cleaner is also a fuel... the car runs on it for around 10 minutes! Cool!! Then you fill a pressure cell with the cleaner, and hook it into the test port on the rail (Schroeder valve). You set pressure to 5-10psi below fuel pressure (I set to 30psi), Then you unplug the vacuum regulator, open the valve and start the car!
While it runs the only thing it's running on is the cleaner, which is pretty brutal, cleaning the rail, injectors, and even piston rings as it's burned through. While that's going on you run the intake cleaner through the intake (pcv hole works), and it attacks the carbon buildups and it circulates.
Finally the car dies when the cleaner's gone, you pour the in-tank cleaner into the tank, and remove the throttle body for final decarboning.... and OMG did mine need it, suuuuuper thick layer on the back of the throttle plate.. no wonder it stuck really bad. Great fix for a throttle that pops.
Then I re enabled the fuel pump and tested it out... my fuel trims went waaaaay down, don't remember the numbers, but that means lots of fuel was taken away that wasn't needed anymore now that the injectors were cleaner. And on my drive home, and 60mph cruise I was at 37mpg, up from around 30mpg at 60 mph previously.
Def a good service to do, I'm sold, and I didn't believe it. Just thought I'd share with you guys if y'all are considering it!!